Numerical modelling of spatially and temporally distributed on‑fault induced seismicity:implication for seismic hazards

作     者：Atsushi Sainoki Adam Karl Schwartzkopf Lishuai Jiang Hani Mitri Atsushi Sainoki;Adam Karl Schwartzkopff;Lishuai Jiang;Hani Mitri

作者机构：Faculty of Advanced Science and TechnologyKumamotoUniversityKumamotoJapan School of EngineeringThe University of Western AustraliaPerthAustralia State Key Laboratory of Mining Disaster Preventionand ControlShandong University of Scienceand TechnologyShandongChina Department of Mining and Materials EngineeringMcGillUniversityMontrealCanada 

出 版 物：《International Journal of Coal Science & Technology》 (国际煤炭科学技术学报（英文）)

年 卷 期：2023年第10卷第1期

页      面：108-123页

核心收录：

学科分类：070801[理学-固体地球物理学] 07[理学] 0818[工学-地质资源与地质工程] 0708[理学-地球物理学] 0837[工学-安全科学与工程] 0804[工学-仪器科学与技术] 0835[工学-软件工程] 0701[理学-数学] 

基　　金：KAKENHI 19K15493 

主　　题：Induced seismicity Fracture network Fault damage zone Crack tensor theory 

摘      要：Induced seismicity is strongly related to various engineering projects that cause anthropogenic in-situ stress change at a great ***,there is a need to estimate and mitigate the associated *** the past,various simulation methods have been developed and applied to induced seismicity analysis,but there is still a fundamental diference between simulation results and feld observations in terms of the spatial distribution of seismic events and its *** present study aims to develop a method to simulate spatially distributed on-fault seismicity whilst reproducing a complex stress state in the fault ***,an equivalent continuum model is constructed,based on a discrete fracture network within a fault damage zone,by employing the crack tensor theory.A fault core is simulated at the center of the model as a discontinuous *** the model,a heterogeneous stress state with stress anomalies in the fault zone is frst simulated by applying tractions on the model outer ***,the efective normal stress on the fault plane is decreased in a stepwise manner to induce *** simulation result is validated in terms of the b-value and other seismic source parameters,hence demonstrating that the model can reproduce spatially and temporally distributed on-fault *** analysis on the parameters shows the variation of frequency-magnitude distribution before the occurrence of large seismic *** variation is found to be consistent with feld observations,thus suggesting the potential use of this simulation method in evaluating the risk for seismic hazards in various engineering projects.